Offline— changes will sync when you reconnect
Back online— syncing your changes

air quality

The degree to which the air is free from pollution or other harmful substances.

Example

Monitoring air quality is essential to protect public health in industrial areas.

Topic

Environment Vocabulary for IELTS

More Environment words

Studying for IELTS? Save words to flashcards and review them with spaced repetition — free on voxara.